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3 years ago

Explain what WHMIS is

Chemistry

1 answer:

White raven [17]3 years ago

7 0

Workplace Hazardous Materials Information System is the answer to this question. Hope it helps :)

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How many grams of Chlorine are there in 1000 g of Iron(III) chloride?

Daniel [21]

Approx.
15
⋅
g
of metal.
Explanation:
Moles of iron oxide,
F
e
2
O
3

=

21.6
⋅
g
159.69
⋅
g
⋅
m
o
l
=

0.135
⋅
m
o
l
with respect to the oxide.
But by the composition of the oxide, there are thus
2
×
0.135
⋅
m
o
l
×
55.8
⋅
g
⋅
m
o
l
−
1

iron metal

=

?
?
g
.
An extraordinary percentage of our budgets goes into rust prevention;
iron(III) oxide
is only part of the redox chemistry. Once you put up a bridge or a skyscraper, which is inevitably steel-based structure, it will begin to corrode.

3 0

4 years ago

Read 2 more answers

Whitney's tidal volume, which is the volume of air that she inhales and exhales, was 0.56 L . Her tidal volume was measured at a

ipn [44]

Given:

Volume of air inhaled V = 0.56 L

Temperature T = 37 C = 37 +273 = 310 K

Pressure P = 744 mmHg = 744/760 = 0.979 atm

% N2 in air = 78%

To determine:

The moles of N2 inhaled in one breath

Explanation:

Step 1: Calculate the moles of air inhales

Based on the ideal gas law:

PV = nRT

where P = pressure, T = temperature, V = volume, n = # moles

R = gas constant = 0.0821 L atm/mol-K

n = PV/RT = 0.979 * 0.56/0.0821*310 = 0.0215 moles of air

Step 2: Calculate the moles of N2

It is given that air contains 78% N2

Therefore:

moles of N2 = 0.0215 * 78/100 = 0.0168 moles

Ans: moles of N2 = 0.0168

6 0

4 years ago

A tank contains a mixture of helium, neon, and argon gases. If the total pressure in the tank is 490. mmHg and the partial press

OleMash [197]

Answer: The partial pressure of neon is 173 mmHg

Explanation:

According to Dalton's law, the total pressure is the sum of individual pressures.

$p_{total}=p_A+p_B+p_C$

Given : $p_{total}$ =total pressure of gases = 490 mm Hg

$p_{He}$ = partial pressure of Helium = 215 mmHg

$p_{Ar}$ = partial pressure of argon = 102 mm Hg

$p_{Ne}$ = partial pressure of neon= ?

$p_{total}=p_{He}+p_{Ar}+p_{Ne}$

$490=215+102+p_{Ne}$

$p_{Ne}=173mmHg$

Thus partial pressure of neon is 173 mmHg

5 0

3 years ago

What type of reaction is shown below? Check all that apply. 2Mg+O2—> 2MgO

SSSSS [86.1K]

Answer:

Reaction types are :

Combination(Mg and O combine)
Oxidation (O added to Mg)
Exothermic (light and heat released)

7 0

4 years ago

Read 2 more answers

If 3.95 g of N2H4 reacts and produces 0.750 L of N2, at 295 K and 1.00 atm, what is the percent yield of the reaction?

adell [148]

Molar mass of N2H4 = 32 grams/mole
3.95 grams of N2H4 = 3.95/32
= 0.123 moles 

This will produce 0.123 moles of N2 
Now,
From the gas law equation. 
P.V = n x R x T 
P = 1 atm (given)
V = 0.123 x 0.082057 x 295 
V = 2.97 Liters 

Theoretical yield = 2.97 Liters.
Actual yield = 0.750 Liters 

percentage yield = (0.75/2.97) x 100 %
= 25.25 %

3 0

3 years ago